Typewriting machine



March 25, 1930.

L. c':. MYERS TYPEWRITING MACHINE Filed Jan. 14, 1927 present in the mac stud L and are held in position by tightening the set screw 6. In this manner the device is iirmly held in position but may be quickly removed if desired. Its application involves no change whatever in the usual construction of the machine. The main suppoming plate 1 is provided with two screw threaded holes 7 and 8. and near its outer end with two elongated slots 9 and 10, the purpose of which will be hereinafter set forth.

The adjustable plate 11 shown in plan view in Figure 5 lies on top of the main plate "1 and is provided with an elongated slot-12 near one end through which passes a screw 13 which threads into the openin 7 on the main plate 1. Near its other end t e auxiliary plate 11 has an elongated slot 14 through which passes a screw 13' which threads into the opening 8 of the main plate 1.

The auxiliary plate has at its ends upturned ears 15 and 16, each provided with an opening and these ears serve as supports for the operating shaft 17. At one end this shaft is provided with a star or ratchet wheel 18 which engages with and is operated by the escapement wheel I. At the other endthe shaft 17 is provided with a small gear or pinion 19 which meshes with a larger pinion 20 on the main shaft of the counting device 21.

This counting device may be of any usual or desired character and is supported in position in the following manner.

A. sheet metal member 22 shown in plan view in Figure 6 is held in position upon the main supporting plate 1 by means of a screw 23 which passes through the slot 9 in the main plate and engages a screw threaded opening 24 in an ear of the member 22. This member 22 is provided with flanges at its edges which are bent upwardly and inwardly at 26 to fit over the base 25 or the counter 21. A screw 27 passes through the slot 10 in the main supporting plate 1 and through a threaded opening 28 in the member 22 and bears against the under side of the base 25 of the counting device, thus holding the same in position because or the pressure between the flanges 26 and the base, a lock nut 27 also being provided.

It will be noted that the main plate is bent to-form an open space 29 and the auxiliary plate is similarly bent to form an open space 30, but this is merely to permit proper operation of the bell hammer M without interior ence with said plates.

It is noted that the mam plate 1 is rigidly fixed in position but the auxiliary plate 11 is adj ustably mounted upon the main plate. This ad ustment is permitted by means of the slots 12 and 14 in said auxiliary plate. This adjustment is desirable for two purposes. In the first place, difierent size ratchet wheels are employed in the escapement mechanism, some of which have twelve teeth and others ten and it is, therefore, necessary to vary the position of the ratchet or star wheel 18 with reference to the escapement wheel when a change is made in the latter. In order to prevent interference of the shaft 17 with the center stop pivot screw, not shown and the bell hammer arm which are in the machine, it is found desirable to make the plate adjustable at both ends.

The member 22 which carries the counter is also made adjustable on the main late since whenever it is desired to change t e ratio, it is necessary to change the pinion 19 or the gear 20 or both. The flanges 26 which engage the base 25 of the counter will permit the counter to be adjusted endwise in order "that the gear 21 may be placed in the same plane with the pinion 19 It will be obvious that'the invention comrises an attachment which is strong and rigidly supported upon the trame of the machine in a very simple manner and without interference with any of the existing parts of the machine. The various adjustments provide simple and efiicient means for permitting escapement wheels of difierent sizes to be used and permitting the ratio-to be changed without any idifficulty. The counter may also be readily i'emoved if desired for any purpose without interfering with any of the other parts. If it is desired to remove the whole attachment, this can be done quickly and without necessitating any change of adjustment of the remainder of the machine. It is obvious that various detail changes can be made in the precise embodiment of the invention without in any way departing from the spirit of the same, which is to be regarded as limited only by the scope of the appended claims.

I claim as my invention:

1. In a counter attachn ant for typewriting machines having a supporting frame, an escapement wheel, a bracket attached rigidly to the frame, and a counter mounted on the bracket and including a driving gear therefor, the combination of means for transmitting motion from the escapement wheel to the driving gear com rising a late and drivingmeans mounted on t e late iiir cooperation with the escapment whee and the driving ear of the counter, and means for mounting t e plate to nether with the driving means on the bracket ?or bodily adjustment in a plane substantially at ri ht angles to the axes of the escapement whee and t e driving gear.

2. In a counter attachment for typewriting machines having a supportin frame, an esca' ement wheel, a bracket attac ed rigidly to t e frame, and a counter mounted on the bracket for adjustment in a plane substantially at ri ht angles to the axis of the esca ment whee said counter including a drlvmg gear therefor, the combination of means for mounting the plate together with the driving means on-the bracket for adjustment in a plane substantially at right angles to the axes of the escapement wheel and the driving gear.

3. In a counter attachment for typewriting machines having a supporting frame, an escapement wheel, a bracket attached rigidly to the frame, and a counter mounted on the bracket and including a drivin gear therefor, the combination of means %or transmitting motion from the escapement wheel to the driving gear comprising a plate and driving means mounted on the plate for cooperation with the escapement wheel and the driving gear of the counter, and means at each end of the plate for independently adjusting said plate together with the driving means on the bracket in a plane substantially at right angles to the axes of the escapement wheel and the driving ear.

4. In a counter attachment fortypewriting machines having a supporting frame, an escapement wheel, a bracket attached rigidly to the frame, and a counter mounted on the bracket for adjustment in a plane substantially at right angles to the axis of the escapement wheel, said counter including a driving gear therefor, the combination of means for transmitting motion from the escapement wheel to the driving gear comprising a plate and driving means mounted on the plate for cooperation with the escapement wheel and the driving gear of the counter, and means at each end 0 the plate for independently adjusting said late together with the driving means on the racket in a plane substantially at right angles to the axes of the escapement wheel and the driving ear.

In testimony whereo I have hereunto subscribed my name.

LEWIS C. MYERS. 

